* {
    margin: 0;
    padding: 0;
  }
  
  body {
    margin: 0;
    font-family: 'Microsoft YaHei', '微软雅黑', 'STHeiti', 'WenQuanYi Micro Hei', SimSun, sans-serif;
    font-size: 14px;
    line-height: 140%;
  }
  
  ul,
  li {
    list-style: none;
  }
  
  a {
    text-decoration: none;
    color: #333333;
  }
  
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-weight: normal;
  }
  
  .flex {
    display: flex;
  }
  
  .container {
    width: 1380px;
    margin: 0 auto;
  }
  
  @media (max-width: 768px) {
    .container {
      width: auto;
      margin: 0 auto;
      padding: 0 10px;
      overflow: hidden;
    }
  }
  
  .between {
    display: flex;
    justify-content: space-between;
  }
  
  .column {
    flex-direction: column;
  }
  
  .items-center {
    display: flex;
    align-items: center;
  }
  
  .text-overflow {
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    -o-text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .mt-10 {
    margin-top: 10px;
  }
  
  .ml-10 {
    margin-left: 10px;
  }
  
  .mr-10 {
    margin-right: 10px;
  }
  
  .mb-10 {
    margin-bottom: 10px;
  }
  
  .mt-20 {
    margin-top: 20px;
  }
  
  .mr-20 {
    margin-right: 20px;
  }
  
  .mb-20 {
    margin-bottom: 20px;
  }
  
  .clearfix:after {
    content: '';
    display: block;
    clear: both;
  }
  
  .grey {
    color: grey;
  }
  
  .qr_code {
    border: 1px solid #eee;
    border-radius: 5px;
    padding: 45px 0;
  }
  
  .bg-fff {
    background: #ffffff;
  }
  
  .link-color {
    color: dodgerblue;
  }
  